Smith J-frame, alloy > KT P3-AT for running. Got my Taurus Total Titanium 651 for running, walking, and hiking while sweating like a butcher. The less steel the better.
Carry methods.
1. Jogging waist pouch, smallest one that will fit snubby & wallet. Old-school fanny packs are too floppy. I can't recall where I got mine, but it works handily.
2. Thunderwear. Works, but I prefer the waist pouch because I can go in/out of the waist pouch for accessories more easily.
3. Belly band. Requires baggy overshirt and an undershirt is suggested. ONLY for quick outings, as the wide fabric/skin contact + sweat over time = heat rash.
4. Chest holster. Better used for cycling & toting my SW1911, but will work under a baggy shirt for a walk or hike.